newtonian mechanics - Why does a Yo-Yo sleep, and then awaken? - Physics Stack Exchange
Amazon.com: YoyoFactory Arrow Elite Beginner Yoyo Toy - Comes with Extra String & Pre Tied Finger Loop - Includes Bearings for Beginners to High Performance - For novice & advanced tricks -
Yoyo. - ppt stáhnout
DEMO-SITE - Hi Spinner YO-YO - Out of This World Toys - Specialty Toys Network Demo Site
The Yo-Yo - ROTADYNE
Newton's Kinetic YoYo, Energy Conversion: Educational Innovations, Inc.
How do yo-yos work? | Who invented yo-yos?
Amazon.com: YoyoFactory Arrow Elite Beginner Yoyo Toy - Comes with Extra String & Pre Tied Finger Loop - Includes Bearings for Beginners to High Performance - For novice & advanced tricks -
How Yo-Yos Work | HowStuffWorks
Amazon.com: YoyoFactory Arrow Elite Beginner Yoyo Toy - Comes with Extra String & Pre Tied Finger Loop - Includes Bearings for Beginners to High Performance - For novice & advanced tricks -
We created a 3D printer yoyo that performs as well as bimetal - General Yo-Yo - YoYoExpert Forums
Yo-Yo School Can Unlock Secrets of Physics! • Hilltown Families
SB-2 Polished Aluminum Yo-Yo » Tom Kuhn Yo-Yos
Yo-Yo "Popstar" Purple | eBay
Yo-Yos and Other Simple Machines | Mr. Electric
Wooden Yo Yo | Historic Jamestowne
MIT's “Yo-Yo Class” | MIT Department of Mechanical Engineering